Patents Examined by Emmanuel Sayoc
  • Patent number: 7247004
    Abstract: An electronically controlled actuator for controlling a turbocharger has a motor, a speed change mechanism and a position sensor contained in a case consisting of a body and a cover. The driving force of the motor is transmitted through the speed change mechanism to an output shaft to drive the movable vanes of a turbocharger for turning. A first bearing supporting the output shaft for rotation is held on the cover, and a second bearing supporting the output shaft for rotation is held on the body. The position sensor is mounted on the output shaft of the motor. The reliability of the actuator is improved.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: July 24, 2007
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Masayuki Suganami, Hiroaki Saeki, Shigeki Yamada
  • Patent number: 7168924
    Abstract: A rod pump control system includes a parameter estimator that determines from motor data parameters relating to operation of the rod pump and/or downhole dynamometer card without the need for external instrumentation, such as down hole sensors, rod load sensors, flow sensors, acoustic fluid level sensors, etc. In one embodiment, instantaneous motor current and voltage together with pump parameters are used in determining rod position and load. The rod position and load are used to control the operation of the rod pump to optimize the operation of the pump. Also disclosed in a pump stroke amplifier that is capable of increasing pump stroke without changing the overall pumping speed, or in the alternative, maintaining the well output with decreased overall pumping speed.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: January 30, 2007
    Assignee: Unico, Inc.
    Inventors: Thomas L. Beck, Ronald G. Peterson, Mark E. Garlow, Theresa Smigura
  • Patent number: 7162948
    Abstract: An assembly includes a piston and a transition arm coupled to the piston. The position of the transition arm is adjustable to vary a stroke of the piston. A balance member is adjustable relative to the transition arm to counterbalance the transition arm in varying positions. A control rod is coupled to the transition arm and the balance member. Linear movement of the control rod moves the transition arm in a first direction to change the stroke of the piston and moves the balance member in a second direction substantially opposite the first direction to counterbalance the transition arm. A method of counterbalancing a variable stroke assembly includes moving a transition arm coupled to a piston to vary a stroke of the piston, and moving a balance member in a direction substantially opposite to the direction of movement of the transition arm to counterbalance the transition arm.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: January 16, 2007
    Assignee: R. Sanderson Management, Inc.
    Inventors: Robert A. Sanderson, Albert E. Sanderson
  • Patent number: 7147442
    Abstract: An automatic oil pump includes a drive chamber, having a reciprocal driving device, and an oil chamber, having a sucking device, located on two sides of a main body. The reciprocal driving device has a piston unit having a valve chamber at its center and a balance valve and is pushed by a spring. The drive chamber has grooves on its inside wall. The piston unit has two channels, allowing air to flow into the valve chamber past two sides of the piston unit. On the piston unit is a driving rod. The driving rod penetrates into the main body and reaches into the oil chamber. A hermetic cover and a movable piston are attached to an end of the driving rod. On the wall of the piston are pluralities of through holes. The reciprocal driving device drives the piston in the oil chamber to move reciprocally, so oil is sucked into and out of the oil chamber continuously. Thereby, oil sucking speed and volume are upgraded to save time and labor, and oil pumping efficiency is enhanced.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: December 12, 2006
    Inventor: Kuo-Chung Yeh
  • Patent number: 7128539
    Abstract: Improved method for cleaning a pump, fluid hose, and spray gun is provided by, for example, repeatedly changing the flow rate of the cleaning fluid pumped through the system to generate turbulence or increased turbulence and increased frictional resistance for enhanced cleaning action. A pressure control can cyclically vary the speed of the pump motor and pump connected thereto to generate the turbulence. The pumping cycle can alternate between a first and second power level and at a desired time interval for each speed. With a suitable solvent as the pumped fluid, the turbulence that is generated by the cyclical pumping action causes an increase in the scrubbing action of the solvent to quickly loosen residual material in the fluid passageways.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: October 31, 2006
    Assignee: Titan Tool, Inc
    Inventors: Troy Allen Anderson, Joseph W. Kieffer, Sandor Peter Veres
  • Patent number: 7097432
    Abstract: A turbocharger having a variable geometry turbine inlet incorporating a cylindrical piston movable to vary the area of the inlet nozzle into the turbine. Vanes mounted to the piston for flow control in the nozzle are received through a slotted heat shield which provides smooth aerodynamic flow into the turbine blades. The vanes additionally incorporate a step having larger cord and depth that engages the surface of the heat shield and seals the slots with the piston in a closed position. An axial actuator is attached for operation of the piston.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: August 29, 2006
    Assignee: Honeywell International, Inc.
    Inventors: Alain Rene Lombard, Jean-Luc Hubert Perrin
  • Patent number: 7097435
    Abstract: A method of draining and recharging a hermetic compressor with oil using a drainage assembly mounted in the compressor housing. The assembly includes a tube having a valve mounted at one end thereof with the second end of the tube located in the oil sump of the housing. To drain the compressor oil, refrigerant flowing through the discharge and suction lines is shut off. Refrigerant is purged from the housing to create a vacuum therein and the housing is charged with a gas such as dry air or nitrogen. As the compressor housing is charged with gas, the pressure inside the housing increases, forcing the oil through the drainage assembly and out of the compressor. To recharge the compressor with oil, the gases are purged creating a vacuum in the housing. A predetermined amount of oil is drawn into the housing through a service hose. The compressor is purged and recharged with refrigerant.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: August 29, 2006
    Assignee: Tecumseh Products Company
    Inventors: Sukru Erisgen, James D Rutz
  • Patent number: 7090470
    Abstract: An apparatus and method for controlling a linear compressor is provided. The linear compressor controlling apparatus includes a voltage detection unit, a current detection unit, a control unit and a compressor drive unit. The voltage detection unit detects a voltage supplied to the linear compressor, while the current detection unit detects a current supplied to the linear compressor. The control unit determines whether a collision of a piston of the compressor with a valve of the compressor occurs using output signals of the voltage and current detection units, and controls the amplitude of the piston if the collision of the piston with the valve occurs. The compressor drive unit controls the amplitude of the piston under the control of the control unit.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: August 15, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tae-Duk Kim
  • Patent number: 7090474
    Abstract: A diaphragm pump which overcomes the problem of diaphragm failure due to overfill of the oil transfer chamber. An overfill preventive element in the form of a mechanical stop, a fully closed coil spring, or a valve system, or alternatives are provided.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: August 15, 2006
    Assignee: Wanner Engineering, Inc.
    Inventors: Kenneth Eugene Lehrke, Richard D. Hembree
  • Patent number: 7090475
    Abstract: A hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side being connected to the discharge side with a bypass connection by a valve arrangement for a selected number of engine pistons. The control circuit provides a space-saving way of ensuring that the changeover between speeds occurs smoothly and in such a manner to preserve the individual components as far as possible. To this end, at least one intermediate switching position, in which the delivery side is throttled to the discharge side, i.e. connected by a diaphragm-type arrangement, is provided in front of valve arrangement between the two end switching positions. The valve arrangement is preferably driven such that a valve body can be moved through the intermediate switching position at a controlled speed.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: August 15, 2006
    Assignee: Mannesmann Rexroth AG
    Inventor: Chris Shrive
  • Patent number: 7083391
    Abstract: A method and a system for detecting the speed of a pump motor of a hydraulic pump system are provided, in which pump system a pump is driven by a pump motor to deliver hydraulic fluid into a pump reservoir. In accordance with the present invention, a pressure signal representing the fluid-delivery activity of the pump is detected, and the pressure peaks within this pressure signal identified. The speed of the pump motor is determined on the basis of the frequency or the time intervals of these pressure peaks.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: August 1, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Holger Sievert, Juergen Hachtel, Guenther Hertlein
  • Patent number: 7083392
    Abstract: A method and apparatus for a pump and a pump control system. The apparatus includes pistons integrally formed in a diaphragm and coupled to the diaphragm by convolutes. The convolutes have a bottom surface angled with respect to a top surface of the pistons. The apparatus also includes an outlet port positioned tangentially with respect to the perimeter of an outlet chamber. The apparatus further includes a non-mechanical pressure sensor and a temperature sensor coupled to a pump control system. For the method of the invention, the microcontroller provides a pulse-width modulation control signal to an output power stage in order to selectively control the power provided to the pump. The control signal is based on the pressure within the pump, the current being provided to the pump, the voltage level of the battery, and the temperature of the pump.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: August 1, 2006
    Assignee: SHURflo Pump Manufacturing Company, Inc.
    Inventors: Humberto V. Meza, Nikhil Jitrendo Gandhi, Quang Minh Truong
  • Patent number: 7083395
    Abstract: Under one aspect of the present invention, a liquefied gas pump assembly is coupleable to a source of liquefied gas. A cooling assembly is positioned generally adjacent to a pump module. The cooling assembly has a converging pump-head-receiving aperture, a fluid inlet line and a fluid outlet line in fluid communication with the source of liquefied gas and in fluid communication with the pump-head-receiving aperture. A pump head assembly is removably retained in the pump-head-receiving aperture so that a portion of the cooling assembly is between the pump head assembly and the pump module. The pump head assembly has a converging shape and being sized to engage the cooling assembly in a wedged configuration when the pump assembly is in an installed position in the cooling assembly. The pump head assembly has a fluid inlet pathway abutting in sealable engagement with the fluid inlet line of the cooling assembly.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: August 1, 2006
    Inventors: Romaine Maiefski, Jon Guy
  • Patent number: 7077632
    Abstract: A blower (1) has a housing (10) to which a blower pipe (2) may be removably connected. An internal combustion engine located within the housing (10) drives a blower wheel. The blower wheel, in turn, generates an air flow (11) within the blower pipe. To reduce the exhaust gases and the fuel consumption during idle operation of the combustion engine, a reduction device (12, 22), located in the blower pipe downstream of the blower wheel reduces the clear cross section of flow during idle operation of the engine.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: July 18, 2006
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Gerhard Osburg, Wolfgang Luithardt, Peter Schmidt
  • Patent number: 7077486
    Abstract: An enclosure for handling hazardous material includes a sealable housing which is configured with a first air inlet connected to a bubble gauge and a second air inlet disposed inside the housing for air evacuation from the housing is connected to a pump for maintaining subatmospheric pressure in the enclosure and for drawing a stream of air inwardly through the first air inlet via the bubble gauge into the housing and out the second air inlet. A filter interposed in the stream of air leading to the second inlet. At least one glove port is formed in the housing and has a flexible relatively gas impermeable glove connected thereto. An air exchange port in the housing is operably connected to a sealed bellows which provides for changes in air volume within the enclosure which occurs from moving the glove within the enclosure under subatmospheric pressure.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: July 18, 2006
    Inventor: Stephen F. Tattershall
  • Patent number: 7074019
    Abstract: A wet rotor-type pump, in particular used for pumping a coolant in vehicle motors, comprises a pump impeller for feeding a fluid and a motor rotor connected with the pump impeller. In wet rotor-type pumps the motor rotor is cooled by the fluid to be pumped.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: July 11, 2006
    Assignee: Pierburg GmbH
    Inventor: Andreas Knoll
  • Patent number: 7070399
    Abstract: A variable displacement pump has a cam ring, a rotor, a plurality of vanes, a pressure plate and a rear body. The cam ring is accommodated within a pump body. The rotor rotates within the cam ring. The plurality of vanes are inserted retractably into slits formed at regular intervals circumferentially in the rotor. The pressure plate and the rear body carry the cam ring and the rotor. A circular groove communicating to a back pressure inlet bore on a bottom portion of the slits is formed in a suction area on a face of the rear body on a side of the rotor. The groove is communicated via a communication passage to a passage between a power steering gear and a tank T to introduce a working oil after used in the power steering gear.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: July 4, 2006
    Assignee: Unisia JKC Steering Co., Ltd.
    Inventors: Hideo Konishi, Kazuyoshi Uchino, Haruo Okamoto
  • Patent number: 7070393
    Abstract: The invention relates to a method for regulating a compressor installation with at least one compressor element (6) driven by a motor and, in the pressure conduit (11) thereof, a dryer (2) of the type comprising a pressure vessel (24) with a drying zone (3) and a regeneration zone (4), and a rotor (25) continuously rotated in this pressure vessel (24) by a motor (33), which rotor is filled with a regenerable drying agent. A portion of the compressed air is supplied, by means of a branch (15), to the regeneration zone (4) and, after cooling down and separation of the condensed water, is fed back to the pressure conduit (11). The speed of both motors (9, 33) is regulated by a regulation device (13) in function of the pressure in the pressure conduit (11).
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: July 4, 2006
    Assignee: Atlas Copco Airpower, naamloze vennootschap
    Inventor: Danny Etienne Andrée Vertriest
  • Patent number: 7070394
    Abstract: A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve is operatively connected to the float. The snap acting valve has a rotatable port member that moves so as to switch to exhaust porting when the float falls to the low level position. The port member further switches to motive porting when the float rises to the high level position. As a result, fluid filling the pump tank causes the float to rise from the low level position to the high level position during exhaust porting. Fluid exiting the pump tank causes the float to fall from the high level position to the low level position due to introduction of motive gas during motive porting.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: July 4, 2006
    Assignee: Spirax Sarco, Inc.
    Inventors: Jairo Luiz Soares, Rickie Anthony Pendergrass, Drew Leo Platts, Jon William Dukes
  • Patent number: 7070400
    Abstract: The diaphragm suction pump has a pump chamber (7) located in a base plate (6), the wall of said chamber extending in a conical manner from a central flat base section (7?) to the lateral edge (8). The elastic pump diaphragm (5), which spans the pump chamber (7), is configured in such a way that it lies tightly against the entire pump chamber wall at the top dead center point of the drive connecting rod (4). The diaphragm (5) consists of a self-supporting elastic material with rear recesses (9; 10), which form hinges that can be elastically pretensioned during the operation of the diaphragm (5).
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: July 4, 2006
    Assignee: Medela AG
    Inventor: Andy Greter